Abstract.- Geomorphology of the Arroyo del Medio Basin. A geomorphologic study of an area which includes
tightly the Arroyo del Medio Basin, comprising part of the southern Santa Fe Province and a sector of the northern
Buenos Aires Province, Argentine, is presented. The levels of morphologic adopted correspond to the regional and
intermediate scales, in accordance with the documents which supplied the base information for the study: a low spatial
resolution satellite image for the research at regional level and topographic sheets for the intermediate scale level.
Aspects of the morphogenesis, morphochronology, morphography and morphometry were considered for
generation of qualitative and quantitative models with demonstrative and explicative purposes. Furthermore, a digital
terrain elevation model of the area and its derivate digital slopes models were elaborated, which supply the base for the
study of the major part of the aspects studied. Computer programs of own development were used to obtain many of
the models and, in parallel with the present work, another program was elaborated for the hypsometric analysis,
extraction of the altimetric frequency and to obtain the mean slopes curve of the area, operating on the digital models
of elevations and slopes characteristics.